[ONE Q&A, Help & Troubleshooting] ginta_alexandru:
Later edit5: Tried to restore my nandroid backup and TWRP froze. Had to hard reboot the phone...

Later edit4: It started working. It f***** started working. Out of nowere. Last night, the last thing i tried was this: https://forums.oneplus.net/threads/fix-for-sudden-death-and-boot-loop.146107/

I rebooted the phone and it didn't work. I gave up.

This morning I turned it back on and ... surprise, surprise... it started working (optimizing apps and actually booting into cos12.1).

My happiness didn't last because as soon as the phone started updating some apps, it crashed, and entered a boot loop again. Good thing i managed to copy one of my previous backups.

Can someone explain this behavior?

Later edit3: my phone is still stuck in a bootloop. Neither roms are working.

Things I've tried:

- flash new roms

- erase/ flash persist

- flash color os

Nothing works!

Later edit2: while on cm13, i plugged it in to recharge. While connected to wall plug it did nothing(working fine, as it should be). As soon as i unplugged it started rebooting over and over again... a boot loop. This phone is starting to look like one of the biggest mistakes i ever made. I regret purchasing it.

Later edit: now it just turned off, and pressing the power button won't turn it back on. Had to press it for about 10 - 15 seconds. ANNOYING!

OP: I've been experiencing random reboots on my oneplus ONE since I've had it.

When i first got the phone, i was so excited about it and started flashing custom roms, just for fun and to see which one suites me. I messed up the phone (my camera wouldn't work anymore. All the roms gave me the same message"Camera has stopped working" ) and sent it back to warranty, here in my country, at the shop from which i've bought it. After two weeks they sent it back to me with the note "restored to factory settings". I've checked the "About" section and it was running cos12.1, 1 jan 2016 security patch, kernel 3.4.67.

So I've decided to stick with this rom because I didn't want to mess it up again. But, out of nowhere it rebooted. First i thought that it was an app that needed the phone to reboot. I didn't mind it. I've left my phone over the night and in the morning it was saying "enter pin" as it has rebooted.

Long story short, ever since it reboots at least 1 time a day, and it is getting really frustrating! Sometimes when i'm in an app, sometimes when it just lays around.

Reasons it rebooted:

- no reason, just siting and it rebooted

- opened waze app

- browsing chrome

- tried to connect to a saved wireless network, it rebooted and afterwards the network was not recognized anymore and had to retype the password

- no reason!!! just sitting!!

- fresh install of cos 12.1, i queued about 20 apps to install... it rebooted and continued installing after reboot.

- sometimes i heavily use it and it runs perfectly, but when i stop using the phone and lay it down it reboots. (this only happend one time)

Things I've tried:

- factory reset

- clear cache and dalvik cache

- power cicle the phone

- new rom

None of these worked.

Today I installed sultans CM13, with his 3.4.0 - sultan - caf kernel, hoping that my problems would disappear. (I installed TWRP 2.8.7.0.5, flashed the rom, cleared the cache, flashed the gapps, cleared the cache and reboot.)

It ran flawlessly. I've installed all my apps, played a little with it, configured it as I pleased and I've left it the table for about 15 minutes. When i picked it up, it rebooted(AGAIN!) out of nowhere.

What could it be? As I read through the forums i found out that a log with the exact problem is impossible to get because it gets deleted.

Could it be the wireless network? Could it be the sim card I am using or the phone modem? Could it be because of the launcher?

(for now, i've disabled my sim pin so when my phone reboots i don't miss phone calls if i don't notice it has rebooted)

Please help, as this problem is getting more and more frustrating...